I have an LG sound bar, model LAS751M just over 3 years old that just stopped working. When I power it up, it stays on "Please Wait" and eventually turns itself off. I can turn the volume up and down and it indicates on the display, but there is no sound at all. It also won't pair with it's wireless sub woofer. I even tried downloading the firmware update to a USB drive, but being stuck on the "Please Wait", it won't even recognize it. I also tried holding the Add + button down to initiate a factory reset, but there is no response. And one final observation, when it's stuck on "Please Wait", I can power it off with the remote, but not the power button on the sound bar. I've seen a few posts about this online and it seems to be a common problem. But before I junk it and buy a new one, I was wondering if anyone has ever figured out a fix for this problem? It's most likely shot, like a phone that gets "bricked", but like they say, it doesn't hurt to ask. Thanks for your time.
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Re: LG Sound Bar
Might be worth popping the top off and having a peek inside...Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - Shenanigans -
Re: LG Sound Bar
folk round these parts like to see nice high res in focus pictures to look for clues .Comment
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Re: LG Sound Bar
Hi guys, I have same issue with LG SJ8 sound bar. It's not connect with subwoofer speaker and message on display "Please wait". I will back with picture from inside, boards.Comment
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Re: LG Sound Bar
I was lucky to find one exactly like mine on Ebay for only $32 including shipping. Working, but not in very good cosmetic shape, and the bluetooth only had about a 6' range. And I was curious to see what part was bad causing the please wait message. I didn't know if it was just waiting for communication from one of the wireless modules (There's 3 of them in there) or the main board or the amp board. The problem turned out to be the main board. And with the original Bluetooth module from my unit, the range is good for at least 25'. So that's what I'd recommend, if you can find the same model on Ebay cheap for spare boards to swap, that would be the most cost-efficient solution.Comment
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Re: LG Sound Bar
Main boardAttached FilesComment
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Re: LG Sound Bar
Hi guys, I made few test on mainboard and I found wireless card is not powered, 3.5V is missing on pin1 connector.
Just I wonder if is firmware corruptAttached FilesComment
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Re: LG Sound Bar
I guess that's a possibility. As a test, in the mean time, you could try soldering a 10k (or so) resistor between the 5V input and that enable pin, and see if that 3.5V output comes up.Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - ShenanigansComment
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Re: LG Sound Bar
O yes, I forget to mention that aspect, I applied 5V to that pin and on output pin appeared 3.5V . Nothing is changed on display, same message "Please wait", and tried to find wireless network on my phone, doesn't appear.Comment
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Re: LG Sound Bar
Then a software / firmware issue is indeed that much more likely.Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - ShenanigansComment
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Re: LG Sound Bar
Has anyone firmware for this device ?Comment
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so i took out one of my spare gigabyte ep35-ds3r mobos from storage for use to do some cpu, ram and video card testing of stuff i bought from ebay and got for free from momaka. he bought 50 e8400 cpus for cheap from ebay some years ago and i decided to help him relieve him of some of his supply since he had waaaay too many!!
what did we say about hoarding too much stuff and depriving others of them?! *cough* socialism *cough* lol! 
i had to blow some dust off the board and heatsinks with the datavac as i didnt clean it up before putting it in storage. after finishing... -
Good day ladies and gentleman!
I am currently trying to repair a Grundig Vision 9 37 9880 T USB LCD TV for a friend that has a weird audio problem. Basically everything works fine except for the heavily distorted sound when the Subwoofer module is connected and there is a buzzing sound coming from the PSU PCB.
This seems to be a rather rare TV so there is not much prior on topic help to be found however a service manual is available at the usual sources (Electro Tanya i.e.).
I think the PSU buzzing comes from one of the coils near the bridge rectifier but... -
Hi everyone,
I've got this Samsung here that would be stuck in a boot loop.
After opening up and doing the tape block method, I was able to get it to turn on and play sound from the HDMI input, but with a blue screen.
Does that mean there is another combination of pins that I need to block in order to get a picture, or is there something more serious, faulty mainboard or faulty panel?
Thanks in advance -
Hi guys i've got an Hp laptop Zbook 17 g5 Stuck on Hp protected by hp sure start screen.
I have tried almost every bios available on various platforms about this laptop but the problem is still the same.
I even successfully build my own bios using the one from the Hp website but the problem the laptop still getting stuck there.
Even if i try to press Esc key nothing happens. I tried f10 it doesn't go to bios still stuck there i just saw entering setup menu on the bottom left corner of the
screen that's it and stuck there. I left it until the following day and i still...09-02-2025, 01:51 PM -
Hello to the forum.
My name is Christos, I am new to the forum here and i am posting from Greece.
So i have this old German sound card from Marian, called Trace Alpha. To be exact i have 2 of them and i use them professionally for my small FM radio station here. The first one works like a charm, but the second one does not work at all.
To be more specific in the same exact pc with windows 7 (i even tried 32bit) the one works while the other doesn't.
So i tried asking for a schematic from the company and they would not give me one. Instead they...
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